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2024年山西省大豆生產(chǎn)技術(shù)指導(dǎo)意見

2024-04-02 13:47:32 來源:山西省農(nóng)業(yè)農(nóng)村廳 閱讀量:17767 評(píng)論

導(dǎo)讀:為切實(shí)加強(qiáng)技術(shù)支撐,進(jìn)一步提升大豆生產(chǎn)水平,結(jié)合氣象條件和生產(chǎn)實(shí)際,特制定2024年山西省大豆生產(chǎn)技術(shù)指導(dǎo)意見。

  【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】 為切實(shí)加強(qiáng)技術(shù)支撐,進(jìn)一步提升我省大豆生產(chǎn)水平,結(jié)合氣象條件和生產(chǎn)實(shí)際,特制定2024年山西省大豆生產(chǎn)技術(shù)指導(dǎo)意見。
 
  一、選擇良種
 
  根據(jù)當(dāng)?shù)厣鷳B(tài)條件和市場(chǎng)需求,選擇熟期合適、優(yōu)質(zhì)高產(chǎn)、抗病抗倒、適宜機(jī)收的大豆品種,防止越區(qū)種植。晉北地區(qū)選用生育期相對(duì)較短的早熟品種,如:晉豆15號(hào)、晉豆25號(hào)、晉科5號(hào)、晉科7號(hào)、同豆8181、長(zhǎng)豆34、東豆一號(hào)等;中部地區(qū)選用晉豆19、晉大74、晉遺51、晉遺52、晉遺53、汾90024、汾豆78、汾豆93、汾豆98、品豆24、長(zhǎng)豆34等品種;晉西干旱區(qū)選用晉豆21、汾豆62等品種;南部復(fù)播區(qū)選用汾豆56、汾豆79、運(yùn)豆101、晉豆50、長(zhǎng)豆35號(hào)等品種。
 
  二、選地整地
 
  合理輪作倒茬,前茬最好是禾本科作物,如小麥、高粱、玉米等。無深翻深松基礎(chǔ)的地塊,進(jìn)行秋翻或深松整地;秋季未整地地塊,如遇干旱或上一年有深翻深松基礎(chǔ),應(yīng)采取免耕播種。
 
  三、搶墑播種
 
  根據(jù)土壤溫度、墑情,適時(shí)適墑機(jī)械播種。北部春播區(qū)
 
  可采用地膜覆蓋技術(shù),適時(shí)搶墑早播。南部復(fù)播區(qū)可采用免耕覆秸精量播種機(jī),一次性完成播種、施肥、封閉除草、秸稈覆蓋等作業(yè)。播前曬種1~2天,可用根瘤菌拌種。春大豆播期以4月下旬~5月上旬為宜,復(fù)播大豆在小麥?zhǔn)斋@后6月中下旬播種。
 
  播種密度根據(jù)品種特性、水肥條件及栽培方式而定。建議精量播種,春播高水肥地塊每畝留苗0.6萬~0.8萬株,種子量為3~4公斤/畝,旱地為1.0萬~1.2萬株/畝,種子量5公斤/畝。復(fù)播區(qū)畝留苗1.2萬~1.4萬株,播種量6~7公斤/畝。可采用40厘米等行距種植或采用寬窄行種植,寬行60厘米、窄行40厘米,株距15厘米左右。
 
  四、田間管理
 
  (一)間苗定苗。在大豆出苗對(duì)生真葉展開至第1片復(fù)葉展開前進(jìn)行人工間苗,按計(jì)劃密度定苗。
 
  (二)中耕管理。生育期進(jìn)行2~3次中耕,大豆剛長(zhǎng)出真葉時(shí)中耕一次,以后每隔10天左右再中耕1~2次。根據(jù)土壤是否板結(jié)及雜草多少靈活掌握中耕次數(shù)。
 
  (三)水肥管理。在水地種植大豆,要灌足底墑水,以保全苗;控制幼苗水,適當(dāng)蹲苗;飽澆花莢水,以增花保莢,同時(shí)防止花莢期雨水過量而倒伏。有條件的地方根據(jù)當(dāng)時(shí)旱情和生長(zhǎng)發(fā)育需水規(guī)律進(jìn)行滴噴灌。堅(jiān)持科學(xué)施肥,底肥施入70%的化肥,施肥深度10~15厘米;剩余30%的化肥作種肥施入,深度為4~5厘米;鼓勵(lì)結(jié)合整地施農(nóng)家肥。對(duì)旺長(zhǎng)田塊,在分枝期或初花期噴施生長(zhǎng)調(diào)節(jié)劑,控制節(jié)間伸長(zhǎng),防止倒伏。
 
  (四)雜草防除。根據(jù)當(dāng)?shù)仉s草種類,選擇安全、高效、低毒的化學(xué)除草劑。土壤水分較好的地塊提倡封閉除草,在播種后出苗前進(jìn)行;土壤水分較差或封閉除草效果不佳時(shí),可在大豆苗后2~3葉期進(jìn)行莖葉除草。操作時(shí)應(yīng)嚴(yán)格按劑量要求噴灑,減少對(duì)下茬作物的影響。
 
  (五)病蟲害防治。以豆莢螟、食心蟲、蚜蟲、霜霉、灰斑等病蟲害為防治重點(diǎn),堅(jiān)持“預(yù)防為主,綜合防治”的方針,加強(qiáng)農(nóng)業(yè)防治、生物防治、物理防治和化學(xué)防治的協(xié)調(diào)與配套,嚴(yán)格控制化學(xué)農(nóng)藥的施用量。藥劑篩選和病蟲害防治按照說明書或在農(nóng)技部門指導(dǎo)下進(jìn)行。
 
  五、適時(shí)收獲
 
  機(jī)械收獲的最佳時(shí)期應(yīng)在完熟初期,此時(shí)大豆葉片全部脫落;人工收獲在落葉達(dá)90%時(shí)進(jìn)行。建議選用大豆專用收割機(jī),調(diào)整相關(guān)參數(shù),減少落莢、落粒,降低籽粒破損率和損失率。
 
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